Malvaceae weeds are becoming an increasingly significant problem in Australian cotton farming systems. Narrow and wide leafbladder ketmia, Hibiscus trionum var. trionum and and Hibiscus trionum var. vesicarius respectively, have been found on 85% of all cotton fields surveyed. Anoda weed (Anoda cristata) has become widespread in many Queensland (Qld) cotton growing areas and continues to spread into New South Wales (NSW), while velvetleaf or Swamp Chinese lantern (Abutilon theophrasti) is thought to be currently isolated to small areas of northern NSW. This paper examines the distribution and potential spread of each of these species, and contains some photographs to enhance identification. Species-specific control of these weeds is difficult to achieve because of their genetic, physiological and phenological similarities to cotton. This paper also outlines the &quote;Best Bet&quote; Management options for these weeds, sourced from a series of grower, on-farm agronomist and consultant interviews. This information has been published in WEEDpak.